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CIDR Range

20.45.128.0/20

4.1K IPs /20 Microsoft Corporation AS8075 United States ARIN
Addresses
4,096
4.1K
IP Range
20.45.128.0
→ 20.45.143.255
Sub-ranges
6+
within this block
PTR Density
0.0%
0 of 4.1K IPs have PTR

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

62/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 20.45.128.0/20

CIDRIPsOrganizationASNCountry
20.45.128.0/21 2.0K Microsoft Corporation AS8075 ZA
20.45.128.0/21 2.0K Microsoft Corporation AS8075 US
20.45.128.0/21 2.0K Microsoft Corporation AS8075 ZA
20.45.136.0/21 2.0K Microsoft Corporation AS8075 US
20.45.136.0/21 2.0K Microsoft Corporation AS8075 US
20.45.136.0/21 2.0K Microsoft Corporation AS8075 US

First 256 of 4,096 IP addresses in 20.45.128.0/20

20.45.128.0 20.45.128.1 20.45.128.2 20.45.128.3 20.45.128.4 20.45.128.5 20.45.128.6 20.45.128.7 20.45.128.8 20.45.128.9 20.45.128.10 20.45.128.11 20.45.128.12 20.45.128.13 20.45.128.14 20.45.128.15 20.45.128.16 20.45.128.17 20.45.128.18 20.45.128.19 20.45.128.20 20.45.128.21 20.45.128.22 20.45.128.23 20.45.128.24 20.45.128.25 20.45.128.26 20.45.128.27 20.45.128.28 20.45.128.29 20.45.128.30 20.45.128.31 20.45.128.32 20.45.128.33 20.45.128.34 20.45.128.35 20.45.128.36 20.45.128.37 20.45.128.38 20.45.128.39 20.45.128.40 20.45.128.41 20.45.128.42 20.45.128.43 20.45.128.44 20.45.128.45 20.45.128.46 20.45.128.47 20.45.128.48 20.45.128.49 20.45.128.50 20.45.128.51 20.45.128.52 20.45.128.53 20.45.128.54 20.45.128.55 20.45.128.56 20.45.128.57 20.45.128.58 20.45.128.59 20.45.128.60 20.45.128.61 20.45.128.62 20.45.128.63 20.45.128.64 20.45.128.65 20.45.128.66 20.45.128.67 20.45.128.68 20.45.128.69 20.45.128.70 20.45.128.71 20.45.128.72 20.45.128.73 20.45.128.74 20.45.128.75 20.45.128.76 20.45.128.77 20.45.128.78 20.45.128.79 20.45.128.80 20.45.128.81 20.45.128.82 20.45.128.83 20.45.128.84 20.45.128.85 20.45.128.86 20.45.128.87 20.45.128.88 20.45.128.89 20.45.128.90 20.45.128.91 20.45.128.92 20.45.128.93 20.45.128.94 20.45.128.95 20.45.128.96 20.45.128.97 20.45.128.98 20.45.128.99 20.45.128.100 20.45.128.101 20.45.128.102 20.45.128.103 20.45.128.104 20.45.128.105 20.45.128.106 20.45.128.107 20.45.128.108 20.45.128.109 20.45.128.110 20.45.128.111 20.45.128.112 20.45.128.113 20.45.128.114 20.45.128.115 20.45.128.116 20.45.128.117 20.45.128.118 20.45.128.119 20.45.128.120 20.45.128.121 20.45.128.122 20.45.128.123 20.45.128.124 20.45.128.125 20.45.128.126 20.45.128.127 20.45.128.128 20.45.128.129 20.45.128.130 20.45.128.131 20.45.128.132 20.45.128.133 20.45.128.134 20.45.128.135 20.45.128.136 20.45.128.137 20.45.128.138 20.45.128.139 20.45.128.140 20.45.128.141 20.45.128.142 20.45.128.143 20.45.128.144 20.45.128.145 20.45.128.146 20.45.128.147 20.45.128.148 20.45.128.149 20.45.128.150 20.45.128.151 20.45.128.152 20.45.128.153 20.45.128.154 20.45.128.155 20.45.128.156 20.45.128.157 20.45.128.158 20.45.128.159 20.45.128.160 20.45.128.161 20.45.128.162 20.45.128.163 20.45.128.164 20.45.128.165 20.45.128.166 20.45.128.167 20.45.128.168 20.45.128.169 20.45.128.170 20.45.128.171 20.45.128.172 20.45.128.173 20.45.128.174 20.45.128.175 20.45.128.176 20.45.128.177 20.45.128.178 20.45.128.179 20.45.128.180 20.45.128.181 20.45.128.182 20.45.128.183 20.45.128.184 20.45.128.185 20.45.128.186 20.45.128.187 20.45.128.188 20.45.128.189 20.45.128.190 20.45.128.191 20.45.128.192 20.45.128.193 20.45.128.194 20.45.128.195 20.45.128.196 20.45.128.197 20.45.128.198 20.45.128.199 20.45.128.200 20.45.128.201 20.45.128.202 20.45.128.203 20.45.128.204 20.45.128.205 20.45.128.206 20.45.128.207 20.45.128.208 20.45.128.209 20.45.128.210 20.45.128.211 20.45.128.212 20.45.128.213 20.45.128.214 20.45.128.215 20.45.128.216 20.45.128.217 20.45.128.218 20.45.128.219 20.45.128.220 20.45.128.221 20.45.128.222 20.45.128.223 20.45.128.224 20.45.128.225 20.45.128.226 20.45.128.227 20.45.128.228 20.45.128.229 20.45.128.230 20.45.128.231 20.45.128.232 20.45.128.233 20.45.128.234 20.45.128.235 20.45.128.236 20.45.128.237 20.45.128.238 20.45.128.239 20.45.128.240 20.45.128.241 20.45.128.242 20.45.128.243 20.45.128.244 20.45.128.245 20.45.128.246 20.45.128.247 20.45.128.248 20.45.128.249 20.45.128.250 20.45.128.251 20.45.128.252 20.45.128.253 20.45.128.254 20.45.128.255 + 3.8K more (range too large to list inline)

BGP Routing

Live BGP anomalies →

This block is announced in BGP, observed across our RIPE RIS collectors.

Announced prefix
20.45.128.0/20
Origin AS
AS8075
Announcement samples
13,099
Last seen
2026-07-18 06:45:32

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files.

Date Event From To
2026-05-10 New Allocation — US

Frequently Asked Questions

What is 20.45.128.0/20?

20.45.128.0/20 is a CIDR network block containing 4,096 IPv4 addresses (from 20.45.128.0 to 20.45.143.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 20.45.128.0/20 network?

The 20.45.128.0/20 range is allocated to Microsoft Corporation and announced via AS8075 from United States.

Last updated: 2026-07-18 11:40:32 UTC
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